SC cable lugs are suitable for the connection of copper conductors (section 1.5-1000mm2) in power cable with electronic equipment, they are made of higher 99.9 percent pure copper tube T2 and coated with tin. working temperature -55oC-150oC. Pls visit our web link http://www.niuelec.com/SC(JGK)-COPPER-LUG.html and email me for more information